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| author | Sven Schnelle <svens@linux.ibm.com> | 2024-07-22 15:41:25 +0200 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2024-07-23 16:02:32 +0200 |
| commit | 9b3dcae128f8803950d646329f2301cae3fe8f4d (patch) | |
| tree | 059db8e30dc0affd7bcfaa7a40c9fecf0fb7089e /arch/s390 | |
| parent | 7cc86dee44a47d961fd6195fd91f75ce176b992d (diff) | |
| download | lwn-9b3dcae128f8803950d646329f2301cae3fe8f4d.tar.gz lwn-9b3dcae128f8803950d646329f2301cae3fe8f4d.zip | |
s390/entry: Make ret_from_fork() ready for lowcore relocation
In preparation of having lowcore at different address than zero,
add the base register to all lowcore accesses in ret_from_fork().
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/entry.S | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index bbdbe3c3a770..2bd9ef24ace3 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -307,12 +307,13 @@ SYM_CODE_START(ret_from_fork) lgr %r3,%r11 brasl %r14,__ret_from_fork STACKLEAK_ERASE - lctlg %c1,%c1,__LC_USER_ASCE - mvc __LC_RETURN_PSW(16),STACK_FRAME_OVERHEAD+__PT_PSW(%r15) + GET_LC %r13 + lctlg %c1,%c1,__LC_USER_ASCE(%r13) + mvc __LC_RETURN_PSW(16,%r13),STACK_FRAME_OVERHEAD+__PT_PSW(%r15) BPON LBEAR STACK_FRAME_OVERHEAD+__PT_LAST_BREAK(%r15) + stpt __LC_EXIT_TIMER(%r13) lmg %r0,%r15,STACK_FRAME_OVERHEAD+__PT_R0(%r15) - stpt __LC_EXIT_TIMER LPSWEY __LC_RETURN_PSW,__LC_RETURN_LPSWE SYM_CODE_END(ret_from_fork) |